Process of preparing scouring and other household soaps containing fullers&#39; earth.



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Ni-IJAYHAN SULZBERGER, OF NEEV YORK, N. Y.

rnocnss or PREPARING scouarNe AND ornna HOUSEHOLD soars CONTAINING FULLER-S EARTH.

' New York city, in the county of New York and State of New York, have invented new and useful Improvements in Processes of Preparing Securing and other Household Soaps Containing Pullers" Earth, of which the following is a specification.

I have found that fullers earth is well adapted as a scourer and filler or loader in the manufacture of soaps, especially household and family soaps, such as for instance soaps technically known as brown household soaps, laundry soaps, textile and scouring soaps and certain varieties of toilet and medical soaps. Spent fullers earth, which has been used in decdorizing and de coloring substances of an oily and fatty nature is evenmore advantageously used in the manufacture of these soaps, since the same contains varying percentages of the fatty material, in the treatment of which it was employed. This spent fuller-s earth containing such fatty substances cannot be freed again completely of such fatty su'bstance or economically enough to payfor the expense. Therefore the amount of fatty material retained by such spent fullers earth is today more or less considered 'a -waste and loss, which fatty materials however, in my process enter into the soap either in a saponified or unsap'onified condition. In my new process however, I againmake commercially valuable the amount of fatty and oily substances which the fullers earth, which has been used in the treatment of fats and oils, retains, since in using such spent fullers earth asa scourerand filler in the manufacturing of soaps etc. I add these-retained amounts of fatty and oily substances to the saponifiable material used in these soaps. As an example, when using fullers earth the manufacture of soaps, according to my invention, which earth has served to deodorize and decolorize cotton seed oil, I add, byusiug such spent fullers earth incidentally with the same to the soap stock such amounts of cotton seed oil, which the earth has retained from having been employed in -deodorizing and decolorizing cotton seed oil this amount being generally around about 10%, figured on the weight of Specification of Letters Patent.

Patented Mar. 8, 1910.

Application filed August 5, 1909. Serial No. 511,437.

the spent fullers earth. For many purposes" fprefer to use upward of'l0% of the spent fullers earth.

As a. specific example, in" order to illustrate my invention I cite the following: Twenty pounds of Russian bean oil were saponified so with the necessary amount of caustic potash, dissolved in about twenty pounds of water,- to produce a neutral soap; after 'complete'saponification at about 7 0 to 80 degrees'Q, about I 10 pounds of spent fullers earth, which had 5 been used in the refining of lard and which contain about 10% (of the Weight of the spent fullersearth') of lard,were added to'the hot soap stock, after there had been mixed into the soap and before the addition of the spent fullers earth, a slight excess over the amount of caustic potash-(dissolved inabout three pounds of warm water) necessary to saponify the lard, contained in the spent fullers earth who added. A soapof yellowish brown color was obtained, which proved especially valuable in washing varnished and painted surfaces, possessing detergent and abrasive properties withoutscratching.

The amounts of fullers earth may be mate- 30 rially increased especially when additional amounts of water are added. If sufficient amounts of fullers earth are added and caustic soda is used, the finished products may be pressed into the form of a brick, 35

-Fullers earth and also particularly the same after having been used in the treat ment of fats and oils, is also a valuable ingredient in the manufacturing of soap emulsions, which contain in addition to soap certain larger or smaller amounts of unsaponifiable material as for instance mineral oils, and which are used extensively in washing and securing painted-and varnished surfaces. lhe small specific gravity of stances of a fatty and oily .nature, as a scourer and filler to the soap material.

2. Process for manufacturing, securing and other household soaps of the nature:

herein diqclosed consisting in adding fullers ing in adding spent fufiers" earbh as a ea'rt-h, which has been used in deodorizing secure? and EH61 to such emulsions. and czecoloring cottonseed oil, as a scourer T 1 r 1 w T 1* ER. and filler to the soap matenal. L A HALE 3. Pmce'ss for manufactumng emulslons Wztnesses: eontamlng soap and also unsapomfiabie ma- ALBERT NATHAN. fiercml of the nature harem disclosed conslst- MAX S. W131i 

